Stapling-machine.



6.1. PFRIEMER.

STA'PLING MACHINE. APPLICATION FILIID lULY23. 191'4.

LMQAMLL j f PatentedAug.10,1915.

3 'SHEETS-SHEET l.

C. J. PFRIIEMER. STAPLING MACHINE.

APPLlATlON FILED JULY 23. |914. 1,149,944.- Patented Augglo, 1915.

3 SHEETS-SHEET 2.,

'YE-X- n.1'. PFRIEMER.

STAPLINGM NE. APPLICAITIONLFILEID Z3, 1914.

` Patented Ang. 10, 1915.

3 SHEETS-SHEET 3.

Erg. 5.

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'N 20 23, Aff 'l' "3 l A /Nr/Flvnn (71m 'Imi lf/Hemer .4 TTURNEYS CHARLES JOSEPH PFRIEMER,

0F NEW YORK, N. Y., ASSIGNOR INC., 0F NEW YORK, N. Y. I v

To CEAS. remn- STAPLING-MACHINE.

Lirama. y

vthe securing or fastening of wire staples used in the manufacture of piano hammers for securing the point-s orktips of the felt covering to the hammer molding. I wish it distinctly understood. however, that while this specification discloses particular reference to pianorhammers, the machinefis obviously adapted, either as a Iwhole or in many of its parts, to the operation on many other and various type of work. The term work, therefore, as may beused herein,

l will be'understood asbeing adapted for an interpretation broad enough to lcover not only a piano hammer being stapled, but any other device to which the machine; may be suited. n

Stated more specifically. one of the principal objects of the invent-ion is to provide a means for quickly and accurately twisting the prongs of a wire staple which has been applied toa piece of work, snipping off the points or untwisted portions thereof, and then subsequently bending over or clenchii'ig the portion of the staple thus twisted, whereby an indefinite number of pieces of work may be treatedy in a uniform manner as to application of the staples thereto and the appearance ofthe finished product. ,y A further object of the invention i'sto provide means for operating upon the work in the manner above indicated ina substantially automatic manner and hence at a. very rapid rate compared withtlie hand opera- The foregoing and many other ob]ects of the invent-ion will hereinafter loe more fully 'described'and claimed and illustrated in the ldrawingsforming a part ofthis specification inwvliich likecharacters .of reference indicate corresponding partsA in all the views, and in which Figure 1V is a vertical longitudinal and Specification of Letters Patent. Patent-d Aug., 10, i915. Application med J-uiy 23, i914. serial No. erases.

machine i'n progressive stages of operation;

Fig. 8 isla sectional detailon the linek 8--8 of Fig. 2; and Fig. 9 is a. perspective view of a staple "adapted tobe acted upon by this machine.

Referring more particularly to the drawings, I show at 10 a bed plate adapted to be secured in horizontal position to a bench or table 11 of any suitable character and in front of whiclnor at =the right of Fig. 1, the operator is supposed to be located. At the front end of thebed-plate is shown at 12 an upwardly projecting flange or guard, and to the rear of the guard is van upwardly projecting post 13 havinga hole 14 extending therethrough from front to rear, the front portion of the hole being reamed out .or

nica.

flared so as to gather and guide the pointsr At 15 I show a carriage movable toward and from-the post 13 byany suitable means. As shown herein, the carriage is adapted to slide 'in right lines, being guided along the bed plate by means of a pair ofliaiiges 16 projecting toward each other over flanges 15 projecting laterali)v from thebottom of the carria ge. The guard 1Q limits the movenient ofj the carriage forwardly to idle position and thefpost ,13, ora pillar 13, to

which the post is herein shown as being connected, limits the rearwardmovement of the carriage. The carriage 15 is designed I,to carry the work herein shownas apiano hammer H with a'staple Svpassedthrough the points of the felt F and, the-molding M into position with the .points s of the staple projecting throughtliehole 14,. Thev hammer is `held' temporarily ini position. on the carriage b vfresting .upon .'a,v shelf 17 at` the bottom of the hammer, the front?y edge of the hammer bearing forwardly against g an anvil 18 and the strikingend or point of the hammer resting against an adjustable stop 19 carried by a set-screw 20 supported tion on the carriage. The adjustable screw adapts the machine for hammers of different sizes and shapespdepending upon the various makes of pianos or the differences in the various registersv for the saine set of hammers. At 22 I `show a nger piece which projects upwardly from the carriage and serves to assist the operator in the manipulation of the carriage and holding the vf'erk in position thereon. A trip lug 28 projects laterally from one side of the carria-ge. V

Secured to the upper portion of the bed l plate in the rear of the post 13 is a frame 24 suitable In having a plurality of upwardly projecting bearings 25 and 26 in which is journaled a substantially horizontal shaft 27. A pair of collars 28 serve as one means for preventing longitudinal l.movement of the shaft in said bearings. Alpinion 29 is secured to the shaft preferably closely adjacent the reai' face of .thev bearing 2G. ln front of the i' provided a cone 30 which is dependently of the shaft, but ngitudinally thereon by any s.. This cone is provided with two cams or 'shouldered portions 31 and 32 adjacent its front end or apeX, the shoulder 32 being of larger diameter than the shoulder 31. This cone is shown adapted `to be operated forwardly and rearwardly along the shaft by means of a yoke 33 operating in the grooved rear portion of the cone. The yoke is shown securedto and extending laterally from a sleeve 34 slidable along a rod 35 parallel to-the shaft 27 and supported upon a bracket 36 secured to the bed plate 10'. Any suitable means may be provided to tend to hold the yoke and cone adjacent the bearing 26. The means shown for this purpose comprises a pair of springs,

one spring 37 being coiled about the shaft 35 and acting between one end of the bracket at one end and the sleeve at the other end, and another spring 38 on the opposite side of the shaft 27 is connected at one end to a fixed point 39 and at the other end at 40 to one arm of the yoke. These two springs cooperate with each other to insure a reliable action upon the yoke.

At the front end of the shaft is secured'. a head 41 in which are pivoted at 42 a pair of nipper jaws 43. These jaws are arranged preferably in the form of levers of the first class, and are provided at their fr ont ends with lips 44 which are adapted initially to grasp the prongs s after they have beenl pro.-

y rlhe numeral 4G indicates a combined rack and cam member adapted to reciprocate vertically at one side of the shaft 2T. The

rack teeth 47 coperate with the pinion 29,.-fv and when the member 4G is forced down:4

wardly the pinion and shaft are rotated in 3 a clockwise direction, as viewed from the front. Any suitable means may be provided to operate the 4rack member. rlhe illustration of such means here given is a foot-lever 48 pivoted at 49 to the lower end of the rack and having its rear end pivoted at 50 to some stationary support. rl`he lever 48 is acted upon by a strong spring 51 shown as connected between the table 11 and the lever, and theitendency of the spring is to restore the lever to its normal elevated position. lVhile a downward thrust upon the foot-lever initiates a rotation of the shaft 2T and'nippers 4?) substantiallyv simultaneously therewith, the. cam of the rack member acts against the yoke 33 causing the cam shoulder 31 to cause the nippers to grasp the points s, and during the continued downward movement of the rack member and rotation of the nippers, the projectingl prongs of the staple are twisted together securely, as shown in Fig. G. lVhen the rack member approaches the limit of downward movement, the second cam 53 engages the yoke, giving a further forward impulse and causing the lips 44 of the nippers to snip off the untwisted points of the staple. lVhile the lever 48 is moving downwardly, power is being stored iii the main spring 51 and also in the springs 37 and 38which act subsequently upon the yoke to restore it to normal position, carrying the cone rearwardly so as to allow the nipper lips to open. The means shown for insuring the opening movement of the nippers consists preferably of a comparatively light spring 54 extending transversely of the head 41 and secured to the two jaws in the iear of the pivots 42. The rack member 46 is guided in a fixed bracket 46" secured to the bed plate in the rear thereof and at the side opposite the pinion 29. The upward movement of the rack member is shown in this instance as being limited by means of a stop 55.

At 56 I show a. malletwhose arm is sec ured to the upper end of a vertical rock shaft 57. Secured to. the upper end of the rockl shaft 57 between the mallet arm and the bed plate 10 is a hub 58 having at its lower end a horizontally extending catch 59. A spring meeste spring being-connected to the mallet arm Qand the lower end of the spring is `engaged around or over a. lugl 61 secured to the bed plate'. To the lower end of the rook shaft 57 is secured a finger 62, which projeets laterally therefrom' or in a horizontal plane and .substantially atvrightangles to the i verticalplane of the catch 592' A. bell-crank lever 63 is pivoted at 64 beneath-v the bed i cause rotation of the rock shaft ina counterclockwise direction looking downward, when the main spring 51 acts upon the lever 48 to restore the parts to the normal position shown inFigs. 1, 2 and 3. This a'ction upon' .the rock shaft 57'serves` to set the mallet in the position shown in Fig. 2, with the spring 60 under tension. Thisfposition of the mallet is maintained by means of 'a trigger" 67 pivoted upon the vertical pivot 68 and vacted Upon by a leaf spring 69. This trigger comprises avshoulder .70 engagingdireotly with the catch 59. and also includes a finger 71 projecting beyond and to the right of the shoulder v70 which is adapted to be struck by the trip lug 23 on the carriage when the I is tripped by the lug 23, the mallet will be c vcarriage is moved forwardly. When the foot-lever 48 is depressedby the operator, the link 65 connected to the bellecrankf will swing the finger 66 forwardly away from the linger 62. Hence, when the trigger 67 I free to be thrown" forcibly around in a clockwise direction, as shown in Fig. 7, by means of the stored force of the spring 60. lAt the moment the-trip lug 23 trips the trigger 67, Vthe carriage ison its return forward movement after the staple has been twisted and has it/s points snipped off. As may be seen, therefore, from Fig. 6, there is left a short twisted ,portion projecting from the rear face or edge' of the hammer H which the mallet 56 bends or clenches over toward the point of the hammer, as show n inv Fig. 7. The striking face of the mallet is provided with a pair of parallel ribs 72 which form a groove 73 within which the end of the coiled or twisted portion of the staple is received, thereby insuring that said twisted portion of the staple will always be bent in precisely the same direction.

embed themselves suiiiciently to insure that the staple will be clenched or forced; wel] down within the surface of the hammer.

Themeehanism being thus described in detail, the operation may bel briefly lsummarized as follows.: rlhe operator stationed` in front of the machine applies the hami ters' mers H in suecession to the carriage 15, each hammer having been previously bored and supplied witha 'staple as shown in Figs. 1

and?. The hammer is applied tothe carriage with theloop portion of the staple againsttlie face of the anvil 18, and the member 19 is adjusted so as to bring the points of the staplev in alinement toV be gathered by andfed through the Haring hole 14. After the points of the staple are carried through the hole 14`by the movement oi thecarriage as from the position of Fig. 2, the operator will depress the foot lever 48,v then starting the operation of the combined rack and cam member 46, causing the lnippersA to grasp and twist the staple, as

shown in Fig. 6', and the final portion of the movement 0I the rack member causing the snipping olf of the points, as above defscribed.l When the carriage is drawn forwardly or aw'ay'from the post 13, the mallet will be tripped, which serves lto' olench the twisted portion of the staple, asshown in Fig. 7. At this iiioment the foot-lever y48, beingreleased and allowed to return upwardly to its normal position, will permit the' main spring 51, whose strength is superior to that of the spring 60, to return the mallet to normal position, as shown in Fig.

he finished hammer will then be iei 2. moved from the carriage and another put in its place ready for another operation of the machine. f

Having thus described my' invention, I claim as new and desire to secure by Let- Patent:

11. ln a stapli'ng machine, the combination of a post having a guide hole therethrough. a carriagemovabletoward and from said post, means to hold the work in a substantially fixed position on the carriage with the staple prongs directed through said hole, means on the opposite side 0f the post from the carriage to grasp the prongs and twist them together, and means to cause the grasping meansto snip olf the untwisted points of the prongs.

2.,'111 a stapling machine, the combination of a guide member and a carriage movable relatively toward `and from each other, means to support a hammer with la staple therein upon the carriage iii position to cooperate with said guide member, means on .the opposite side of the guide member from Athe earriage to grasp and twist'the staple y prongs, and means acting subsequently upon The felt F is sufficiently flexible to allowthe ribs '72- to fthe'twisted staple to bend the same down snugly vupon, the hammerf 4 3.`n a machineof the' class setzforth, the combinatinfof rotary shaft, gripping means carried by the' shaft, means tto support a hammer with a staple therein and carry thesan'ie toward the shaft so as to bring. the points of ,the staple into posi- Av tion t0 bei vgrasped bythe gripping means,"

iso

nippers carried by the shaft, means to carrywork `to be stapled into position to be grasped by the nippers, means acting upon the shaft to cause rotation thereof and the gripping'action of the nippers simultaneously, and means acting subsequently to clench the twisted portion of the staple.

5, In a machine of the character set forth, the combination of a rotary shaft and a carriage movable relatively to and from each other, gripping means carried by the sl'laft,

means to vsupport a piece of work upon. the carriage iwith a staple in position to' be grasped by the gripping means, means act-- ing upon the shaft and gripping means to simultaneously cause the gripping means to seize the staple prongs and rotate the shaft, j causing the twisting of the prongs, and a swinging mallet adapted to subsequently clench the twisted staple after the gri pping.I

means and carriage aie separated.

' 6. In a machine ofthe character set forth, the combination of a carriage, means to support a piece of work thereon to be st apled, gripping means adapted 'to seize the staple when the carriage is moved in one dire ction,

means. to rotate the gripping means to `twist the staple after being seized, a spring-operated mallet adjacent the carriage, and means made operative by the movement of the carriage in the opposite direction to cause the mallet to operate to clench the twisted portion of the staple. l

7. In a machine of the character set forth,

' the combination ofa rotary shaft, a pair of nippers pivoted thereon and adapted to be rotated thereby, means to support a :staple in position to be grasped. by the nippers,lv means to rotate the shaft and nippers, and

I tion ofthe shaft to cause the nippers first to seize the staple and twist it and liuhse quently snip off the untwisted points th ereof.l

8. lThe combination' of a rotary shaft, a

' pair of nippers carried by the end of. the

shaft and adapted to mo ve relatively to each other inl aplane coinciding with the axis of the shaft, means to support a piece of work with a staple in position to be grasped by the nippers, conical member mounted upon the shaft and slidable therealong, and means acting L from member to act upon the nippers to gra sp the staple and twist it simultaneously with the 'rotation ofthe shaft,

9. Inra stapling machine, the combination tol the vend of thegslraift-and adapted to @e means. to rotate the shaft," al

rotated therewith, means to support a piece of work with a staple in' position to be grasped by the nippers, a double conical member splined .to the shaft and movable towardand from the nippers, and means serving to' rotate the shaft simultaneously with the action of the nippersto grasp the sta-ple by virtue of one of. bers, the other cone member acting subsequently to cause the nippers to snip oi the untwisted points of the staple.

10. in a machine of the character vset fprth, the combination of a rotary shaft, a pair of nippers carried by the 'same and ,caused to rotate therewith around the axis of the sha-ft, means to support a piece of work with a staple therein in position to be grasped by the nippers, means movable with respect to the nippers and adapted to act thereon initially to cause the nippers to seize the staple and subsequently to snip oif the points thereof, and meansto rotate the shaft and nippers.

11. In a machine of the character set forth, the combination of a shaft, means to rotate the shaft, gripping means carried. by

the shaft and adapted to be rotated there.

with, means to support a piece ofv work with a sta-ple in position to' be grasped by the gripping means, and means actuated by the shaft rotating means whereby the gripping means are caused first to grasp and twist the lstaple and subsequently to snip off the untwisted points' thereof.

l?. In a machine of the character set forth, -the combination of a'pair of nippers, means to support a piece of work with a staple in position to be grasped by said nippers, means Iacting upon said` nippers to cause the rotation thereof, and other means acting upon'the nippers causing them first to grasp the staple and twist the same during the rotation of the nippers and subse- I twisted points of the staple. means acting simultaneously with the rota` carried by the shaft and rotatable therewith,

the cone mem-v means to hold a piece of work with a staple therein in position to be grasped by the nippers, a double conica-l member slid'able along the sha-ft, the two conical portions of the members acting in succession to cause the nippers to grasp the staple and subsequently to snip 0H the untwisted points of the staple, and means acting from the shaft rotating means to make the double conical member effective. the shaftrotating means tjo cause the conical 14. `'In a machine vof the character forth, the combination of a shaft', means to support the shaft for rotation around a -fixed iis axis, apair of gripping nippers carried by the shaft and rotatable therewith, means to rotate the shaft, said last-mentioned means including a combined rack and cam member insonne means slidablenlong the shaft to causel` the gripping means to seize the staple, and means to cause theV cam portion of said combined member to act upon said slidable means, substantially as set forth.

15. ln a. machine of the character set forth, the combination` of a yrotary. shaft, gripping means carried thereby and. rotatable therewith, means to support a piece of Work with a staple therein in position to be grasped by the gripping` means, a combined rack and cam member movable at right angles to the axis of the shaft to cause the rotation thereof and of the gripping means, means acting from and in conjunction with theshaft rotating means to cause the gripping means to act upon the staple, means to act positively' upon the rack to effect the movements aforesaid, and means acting subsequently upon. the'rack and associated parts to restore them to normal position.

16. In a machine of the` bcharacter set forth, the combination of a rotary shaft,

gripping means carried thereby and rota table therewith, means including a rack to cause rotation of the shaft, a lever connected to the rack for positive movement there'oiL ,in one direction, a spring acting upon said.

lever to move the rack in the opposite direotion automatically, means movable toward and from the gripping means adapted to support a piece of Work with a staple in position to be grasped thereby and twisted by virtue of the rotation of the shaft and grip ping means, a power mallet adapted to. act upon the staple after being twisted, and means between said lever and said mallet to automatically cause power to be` stored therein substantially as set forth.

1T, :in a stapling machine, the combination of a roc-l: shaft, a power mallet secured to said rock shaft and adapted to swing in an arc of a circle around the axis thereof, a spring associated with the malletv and i adapted to cause the swinging 'thereof in one direction, means acting upon the rock shaft to swing the mallet in the opposite direction, putting the spring aforesaid under tension, trigger mechanism serving to hold the mallet in set position, a carriage movable in proximity to the mallet and rock shaft adapted tol carry thereon a piece of work being stapled, and means to cause the tripping of said trigger mechanism at a predetermined time from the carriage to make the operation of the mallet effective.

1S. In a machine of the character set forth, the combination of a. bed plate, a rock shaft extending therethrough and journaled therein, a 'power mallet secured to one end ofthe rock shaft and movable in an arc of a circle around the axis thereof, a spring acting between the mallet and the bed platetb cause themallet to move forcibly in one direction, `mitomatic means acting upon the other en d-"`mH the rock shaft to' canse movement'ofthefmaiietinto set position, putti-ng said spring -nnder tension,

trigger mechanismV includin adapted to support a piece-of-worl in pref;-

mnty to the mallet -and-movabie along the rock shaft, and means progectmg from the carriage acting ".vhiie thecarriage is mevr .tch 59 to hold the mallet "1n set position, a carriage shaft andinovable in an are of a circle therewith around the anis thereof, a spring acting between the mallet and the bed plate to cause the quick movement of the mallet in one direction, trigger mechanism including a catch 59 serving to hold the mallet in set position with the spring' ,under tension, automatiomeans of superior force to the spring aforesaid, to move the mallet into position storing power in said spring, said automatic means including a finger secure-d to another portion of the rock shaft and e3:-

tending therefrom an angle to the' catch4 aforesaid, and means ".nera'tive from thc carn riage when moved in trip the trigger mechan i at predetermined time to set the mallet free, substantially as set f *tin 20. ln a. stapling machine of the character set forth, the combination of a bed plate, a carriage movable therealong and adapted to support a piece of worlr in position to be rtain direction to stapled, said supporting means includingan anvil member against which. the loop 'pertion of the staple abuts, a power mallet ad;- jacent the carriage and movable toward said anvil member, 'a spring associated with the mallet tending to move it as aforesaid, automatic means of strength superior to said y spring serving to move the mallet in the opposite direction into set position, trigger .mechanism serving to hold the mallet in set position, and means projecting from the car riage whereby the movement thereof in one direction at a predetermined time will-trip the trigger mechanism, allowing the mallet Milli to swing under the force of its spring so as i to act upon the work in conjunction with said anvil member.

2l. In a stapling machine, the combination of a power mallet movable forcibly in a certain path, a carriage adapted toy support a piece of work with a wire staple therein yand movable with the staple along said path, and means operated fromthe can r'iage during its movement to cause movename to this specification in the presence of ment of the mallet at a. predetermined time, two subscribing witnesses. the face of the mallet belng -provided' with a. groove 7 3 serving to receive the projecting CHARLES JOSEPH' PFREMER' ,i vpcnftion of the staple and cause it vto be- Witnesses: y lenched in a predetermined direction. W. J. PFRIEMER,

whereof I have signed my BEATRICE Fmx. 

